[automerger skipped] Merge "AudioFlinger: synchronize OutputTracks start on duplicating threads" into udc-dev am: 4ac986d835 am: 9cbf9ff8aa -s ours

am skip reason: Merged-In I0eec8c5817c97f7b7643a7151037aff5dc73f3ae with SHA-1 19952e1233 is already in history

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/av/+/22749304

Change-Id: I7c1d3189666c3f0f900a8d835b1f45168638922f
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>